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A109734 In A109732, the number 2n+1 appears in position a(n). 2
1, 2, 5, 3, 30, 6, 28, 4, 38, 26, 11, 7, 36, 29, 14, 8, 201, 39, 34, 27, 180, 12, 175, 9, 199, 37, 46, 31, 25, 15, 178, 10, 242, 202, 49, 40, 197, 35, 54, 32, 192, 158, 23, 13, 208, 176, 57, 16, 240, 200, 61, 41, 83, 47, 195, 33, 121, 42, 67, 17, 190, 179, 70, 18, 689, 243 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

EXAMPLE

9 appears in position 30 in A109732, so a(4) = 30.

MATHEMATICA

(* using the M generated in A109732 *) ms=Sort[M]; k=1; While[ms[[k]]==2k-1, k++ ]; k=k-1; Take[Ordering[M], k] (Noe)

CROSSREFS

Cf. A109732, A109739, A109740.

Sequence in context: A097754 A122992 A051497 * A077073 A199602 A106315

Adjacent sequences:  A109731 A109732 A109733 * A109735 A109736 A109737

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Aug 10 2005

EXTENSIONS

More terms from T. D. Noe (noe(AT)sspectra.com) and Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 10 2005

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Last modified February 17 05:54 EST 2012. Contains 205985 sequences.